Trolley.



; No. 773,459: PATENTED OCT. 25, 1904. F M. L. BBISTLE. i TROLLEY.

7 v APPLICATION FILED wean. 1904.

NO MODEL.

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I 19; & wemffia UNITED STATES Patented October 25, 1904.

PATENT EETcE.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 773,459, dated October 25, 1904.

Application filed August 15, 1904:. Serial No. 220,741. (No model.)

To all whom, it may concern.-

Be it known that LTVTARTIN L. BEISTLE, a citizen of the United States of America, residing at Ingram, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful lmprovementsin Trolleys, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to trolleys, and more particularly to the harps thereof; and the object of this invention is to provide a novel form of harp in which the trolley-wheel is adapted to be mounted, and I have employed novel means in connection with my improved hub whereby the same will at all times be retained in engagement with the trolley-wire.

It is a well-known factthat considerable trouble has been experienced on account of the trolley-wheels leaving the trolley-wire when the cars or vehicles are passing around a curve when irregularities in the wire are encountered, and when constructions such as the overhead work under bridges and the guide-wires obstruct the path of travel of the trolley-wheel the same have a tendency to leave or fly off the wire, and to overcome this discrepancy I have provided a swiveled harp, said harp having pivoted arms in which the trolley-wheel is journaled, and I form said arms whereby they will extend upwardly at each side of the wire and guide the movement of the wheel upon said wire should the same become disengaged, and in connection with said arms and harp I employ springs to normally hold the trolley-wheel in engagement with the wire. The springs which I employ are an auxiliary adjunct to the ordinary springs employed in connection with the trolley-pole at the base thereof and carried by the top of the streetcar. a

The construction briefly described above will be hereinafter more fully described and then specifically pointed out in the claims, and referring to the drawings accompanying this application like numerals of reference indicate similar parts throughout the several views, in which Figure 1 isa side elevation of a trolley-pole having my improved harp mounted thereon.

Fig. 2 isa side elevation view of my improved harp, partly in section. Fig. 3 is an end view thereof. Fig. 4 is a top plan view of my improved harp.

To put my invention into practice, I construct my improved harp and its appurtenant parts upon the trolley-poles commonly used, and in Fig. 1 of the drawingsI have illustrated one of these poles, which is designated by the reference-numeral 1. This pole is pivotally mounted, as indicated at 2, to the top 3 of a car, and said pole is forced upwardly and controlled by the trolley tension-controller or device, as indicated by the reference-numeral 4, this trolley controller or device being of the ordinary and well-known construction commonly used. To the upper end of the pole 1 I swivel my improved harp 5, and to accomplish this I provide a screw-threaded contract-v The harp proper consists of a curved bar which in its lower end has formed an aperture 9, and through said aperture passes a pin 10, which carries on its outer ends the upwardly-extending arms 11 11, the upper ends of which arecurved and bent outwardly, as indicated at 12 12, these arms being adapted to extend parallel to the trolley-wire 14, as clearly illustrated in Fig. 1 of the drawings. The end of the harp 5 is formed with a depending lug 15, which is provided by cutting away the end of the curved bar comprising the harp, as designated at 16. Near the ends of the arms 11 11 I mount a pin 17 between said arms, this pin being adapted to engage the depending lug 15, which acts as a stop and prevents a downward movement of the arms 11 11. The harp is provided with apertures 18 18, in which the end of a trolley-rope 19 may be secured. Between the arms 11 11 and intermediate the ends of said arms is l journaled a pin 20, and upon this pin is mounted a journal-wheel21, said wheel being of the ordinary form now commonly used. The bar comprising the harp 5 is provided with pins 22 22, to which are connected the ends of springs 23 23, the other ends of the springs being connected to pins 2 1 24, carried upon the outer side of the arms 11 11.

hen the trolley pole and harp are in the position shown in Fig. 1, the springs 23 23 are adapted to normally hold the trolley-wheel in engagement with the trolley-wire, and should any obstruction interfere with the travel of said wheel, causing the same to become disengaged from the wire, the springs 23 23 will return the wheel to engagement with the wire 14, this return movement being facilitated by the upper curved ends of the arms 11 11, which serve as guide-arms to place the trolley-wheel back in engagement with the wire. By employing the auxiliary springs 23 23 in conunction with the pivoted arms 11 11 I have provided novel means wherebyshould the tension-controller 4. not return the trolley-pole with as great a rapidity as required to immediately place the trolley-wheel upon the wire the springs 23 23 will move the arms 11 11 upwardly until the wheel has become engaged with the trolley-wire. Should an obstruction be encountered by the wheel, the dependinglug 15, formed by the end of the harp, will prevent the obstruction from forcing the arms downwardly past said lugs, and should the pin 17, carried by said arms, engage said lug and the obstruction continue to press said arms downwardly the trolley-pole 1, which is pivoted at 2, will receive and permit the obstruction to pass, at which time the tension device 1, in conjunction with the springs 23, will immediately and with considerable rapidity return the trolley-wheel to its normal position.

The reference-numeral 25 indicates a setscrew which is employed in connection with the swiveled connection of the harp with the trolley-pole 1, this set-screw being used to provide a fixed connection when it is desired, whereby it will be impossible for the harp to swing upon the pole.

I wish it to be understood that I do not care to confine myself to the use of the two springs shown in Fig. 2 of the drawings, but may employ one spring of a sufficienttension, which may have its one end mounted between the arms, while its other end is secured upon the top of the harp at a point similar to the pins 22 22 heretofore described, and I do not care to limit myself to the specific shape or contour of the arms 11 11, but may so form the same in connection with the trolley-pole 1 whereby the results above enumerated will be realized and a construction provided which will be advantageous to the general operation of the trolley-pole.

Having fully described my invention, what 1 claim, and desire to secure by Letters Patent, is

1. The combination with a trolley-pole, of a harp swiveled thereon, said harp comprising a curved bar, arms pivoted to said bar, a trolley-wheel journaled between said arms, means for limiting the downward movement of said arms, and means for "normally holding said arms in an elevated position.

2. The combination with a trolley-pole, of a harp swiveled to the upper end of said pole, arms pivotally connected to said harp, the upper ends of said arms being bent outwardly and extending above the trolley-wire, a trolley-wheel journaled between said arms, means for limiting the downward movement of said arms, and means whereby said trolley-wheel will be normally held in engagement with said wire.

3. The combination with a trolley-pole, of a curved bar swiveled upon the outer endof said trolley-pole, curved arms pivotally connected to the lower end of said. bar, the upper ends of said arms being bent outwardly, a trolleywhe'el journaled between said arms, means for limiting the downward movementof said arms, and means for normally elevating said arms.

In testimony whereof I aflix my signature in the presence of two witnesses.

MARTIN L. BEISTL E. l/Vitnesscs:

M. E. LAWSON, K. H. BUTLER. 

